Start by heating a large pot over medium heat. Add a splash of oil along with the quartered and thinly sliced onions. Stir occasionally, letting those onions turn a beautiful golden brown. This process should take about 20 to 30 minutes. Don’t rush; patience is key to achieving that sweet, caramelized flavor!

Once the onions are caramelized, it’s time to add the beef bouillon. Dissolve the crumbled bouillon cubes into 2 quarts of water and add it to your pot. Bring this mixture to a gentle boil. The aroma wafting through your kitchen will have everyone asking for a sample. Trust me; it’s that good.

In a separate bowl, mix the all-purpose flour with ½ cup of chilled water until smooth. Slowly pour this mixture into your soup while stirring constantly. This adds a lovely creamy texture to the broth—an essential step for mouth-watering results.

Next, stir in the rich heavy cream, Worcestershire sauce, sea salt, cracked black pepper, and smoked paprika. Let everything cook together for an additional 10 minutes on low heat. This step creates a luscious and full-bodied soup that will be hard to resist.

Now, for the pièce de résistance: divide the soup into oven-safe bowls, top generously with the shredded Colby-Monterey Jack cheese, and broil until golden brown and bubbly. This step delivers that irresistibly gooey cheese layer that everyone loves.